Home / 81,045.87-111,843.35-45,235.86

Finding the Fourth Proportional to 81,045.87, 111,843.35 and 45,235.86

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Solution

The fourth proportional to 81,045.87, 111,843.35 and 45,235.86 is: 62,425.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,045.87 : 111,843.35 = 45,235.86 : x
  2. Step 2: Convert to fraction form
    81,045.87/111,843.35 = 45,235.86/x
  3. Step 3: Cross multiply
    81,045.87x = 111,843.35 × 45,235.86
  4. Step 4: Simplify right side
    81,045.87x = 5,059,329,896.35
  5. Step 5: Solve for x
    x = 5,059,329,896.35/81,045.87
  6. Step 6: Final answer
    x = 62,425.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.